Black Hat Technique:
Black Hat technique is referred as the Unethical SEO, where search engine guidelines are not followed. Used to result higher in search engine within short time, which results in temporary or permanent ban of your Website from Search Engine results. Examples of Black Hat SEO techniques include Keyword Stuffing, Hiding Text and creating Doorway Pages.
White Hat Techniques:
White Hat SEO refers to use of SEO strategies completely following search engine guidelines. White Hat SEO is the ethical SEO techniques, however if White Hat SEO is followed then your Website may take long-time to reach higher in search engines. Some examples of White Hat SEO techniques include using Keyword Analysis, Back-linking, quality Inbound Links to improve link popularity, and writing content for human readers.
SEO Black Hat: The prohibited use SEO techniques to promote your website on search engines, in order to achieve results faster and higher in the search results. Some common techniques of "black hat" is "spamming". Put the links and create links bluff, spreading. And high speed. The result is quite high, but the duration is not long in search results.
SEO White Hat: The application of SEO techniques that the search engines recommended. Follow the guidelines set by the search engines. To result in long, medium speed. Create a link moderate, and high relevance. In the search engine results remain relatively stable period.